Has anybody here ever worked with mocap data before? I might be tasked with "cleaning up som mocap data", and was wondering what all that might entail. I've never touched mocap before, so have no idea what to expect.

It's not thaaaat bad, you just have to go through and pick out spikes in the animation and retarget the curve data. If you've ever gone back and forth from max to maya animating, or vice versa using fbx to export and import curve data, it's somewhat like that.

Yeah it's mainly just cleaning spikes and really odd places in the anim. Sometimes IK mishaps can happen since the math and mocap don't always mix so you clean those up. Generally just making everything not suck. It will be keyed on 1's and usually at a rediculous frame rate upwards of 100fps at times. Have fun!